The thermal conductivity sensor can be used to measure the thermal
conductivity of granular materials and gels.
conductivity of soil for
agronomic and engineering applications.
conductivity of foods
to optimize cooking or baking times.
conductivity of insulating materials for use in engineering design.
Dimensions: Handle is 25 x 13 x 13 mm long,
Needle is 60mm long, 1.27mm diameter.
70 ohms (1041.5 ohm/meter). Temperature Sensor: 10K Precision Thermistor. Cable length: 2m standard (additional cable available.)
The thermal conductivity
sensor consists of a 60mm long stainless steel needle. The needle
contains an Evanohm heater and a precision 10K thermistor. The
thermal conductivity of a material is determined by inserting
the needle in the material, applying current to the heater, and
monitoring the temperature rise with the thermistor. The thermal
conductivity can be calculated from the power input and temperature
rise during a 1 to 2 minute heating period.
The East 30 Sensors Thermal
Conductivity Sensor is based on the accepted methods and technology
for the measurement of thermal conductivity.
American Society of Agronomy,
Method of Soil Analysis, Part 1 Second Edition, Monograph
9, Chapter 39.
Bristow, K.L., R.D. White,
and G.J. Kluitenberg (1994). Comparison of Single and Dual
Probes for Measuring Soil Thermal Properties with Transient Heating.
Australian Journal of Soil Research 32:447-464
de Vries, D.A. (1963).
Thermal Properties of soils. Physics of Plant Environment.
(Ed. W. R. Van Wijk.) pp. 210-35 (North-Holland: Amsterdam)
Putkonen, J.K. 1998.
Soil Thermal Properties and Heat Transfer Processes near Ny
Alesund, northwestern Spitsbergen, Svalbard. Polar Research,
Vol. 17 (2), pp.165-179. Norwegian Polar Research Institute.
Putkonen, J. K., Climatic
control of the thermal regime of permafrost, northwest Spitsbergen.,
Ph.D Dissertation thesis, University of Washington,